CVE-2017-16025 : What You Need to Know

Nes is a hapi websocket extension library that has a vulnerability in versions 6.4.0 and earlier, allowing a denial of service attack through an invalid Cookie header.

Understanding CVE-2017-16025

Nes library versions <=6.4.0 are susceptible to a denial of service vulnerability due to improper handling of invalid Cookie headers.

What is CVE-2017-16025?

The CVE-2017-16025 vulnerability affects the Nes node module, specifically versions 6.4.0 and below.
The vulnerability arises from the mishandling of invalid Cookie headers during websocket authentication.
It can lead to a denial of service attack by causing the node process to error out when an invalid cookie is submitted during the websocket upgrade request.

The Impact of CVE-2017-16025

Attackers can exploit this vulnerability to disrupt the node process, potentially leading to service unavailability.
The vulnerability poses a risk to systems where websocket authentication is configured to use

cookie

.

Technical Details of CVE-2017-16025

Nes library's vulnerability details and affected systems.

Vulnerability Description

The vulnerability allows for a denial of service attack through an invalid Cookie header submission.

Affected Systems and Versions

Product: Nes node module
Vendor: HackerOne
Versions Affected: <=6.4.0

Exploitation Mechanism

Exploiting the vulnerability involves submitting an invalid cookie during the websocket upgrade request, triggering an error in the node process.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2017-16025 vulnerability.

Immediate Steps to Take

Upgrade to a version of the Nes library above 6.4.0 to eliminate the vulnerability.
Avoid using

cookie

for websocket authentication if possible.

Long-Term Security Practices

Regularly monitor for security advisories and updates related to the Nes library.
Implement secure authentication mechanisms to reduce the risk of denial of service attacks.

Patching and Updates

Apply patches and updates provided by HackerOne to address the vulnerability.